Photo-printing press



Aug. 30, 1927.

PHOTO PRINTING PRESS Filed Feb. 21. lszs gwwmtoz Cil qll

Patented AugD 30, 1927.

erneuern MARCONI, or GENOA, ITALY.

PHOTO-PRINTING PRESS.

Application filed February y21, 1925, Serial No. 10,808, and in ItalyDecember 20, 1924.

This invention relatesto improvements in photo-printing presses for usein printing photographs either by the action of sun light or byartificial light, the object of the invention being to provide animproved device of this character which is simple in construction andwhich can be operated precisely and y rapidly.

W ith the above and other objects in View, the invention consists in theconstruction, combination and arrangement `of devices hereinafterdescribed and claimed.

1n the accompanying drawings Figure 1 is a plan, part-ly in section, ofa photo-printing press constructed in accordance with my invention.

Figure 2 is a transverse section of the same on theline m-.r ofFigure 1. i

Figure 3 is a longitudinal section ofthe same on the line 1l/ y ofFigure 1. f

Figure 4 is a detail section.

Figure 5 is a detail perspective of the means for securing the movablepart of the cover to the frame of the press.

The press as shown in the annexed drawings, is composed of a rectangularwooden frame 1 of the usual type, but having the sides higher andnarrower than those of the usual press frames. The frame is provided onits inner side with the usual flange toy support the glass plate 3against .which the photo paper and eventually the negative iilin ispressed by the plate cover. Said cover is formed by two pieces 2 and 2which are hinged together. Each of the two pieces of the cover ispressed by a metallic or other elastic cross bar l, fastened thereto.The ends of these cross bars are arranged to enter corresponding slots 4cut in the frame and are kept in this position by spring hooks 5 whichare encased in 'the sides of the frame and fixed thereto by means ofintegral corner po-ints as shown, or by other similar means. lll'rithinthe longer sides of the said frame, and precisely in the port-ionsbetween the slots in which the ends of the cross bars enter and thecorners of the frame, are longitudinal. slots 6a open towards theinteriory and closed by the outer edges of the frame. In the said slots6a are levers 6, the fulcruins of which are formed by wood screws 7 andeach having an outwardly turned arm arranged to engage one. of thespring hooks; The opposite ends of said levers bear against the innerends of cylindric buttons 8, which the cover to be raised.

are placed in corresponding' holes in the frame and project from theouter edge of the frame. y

The movable portion of the plate cover has on the side which is oppositeto the hinge, a stop 9 shaped as shown in Figures 1,2, 3 and 5, andformed by a. piece of V-shaped metallic plate and provided at the outerend with oppositely extending finger pieces 10. The said stop has itsunion end embedded in the cover 2, while the projecting portion 'isarranged to tightly lit in a slot 9a in the frame 1, the width of thesaid slot being slightly less than that of the section of the V-shapedvpiece 9 which consequently needs a little pressure to enter into thesaid slot and remains fixed therein, the said V-portion 05:' the stop 9ybeing of such length that, when the cover is placed in the frame, andthe said stop is in the slot 9a, the finger pieces 10 projecting out ofthe frame sufliciently for en gageinent by a linger.`

The operation is as follows:

After having placed in the frame the plate with the negative and thephotopaper, the plate cover is closed and is held in closed posit-*ionby the stop 9. The cross pieces -i are pressed inwardly by the fingersuntil their ends are yengaged and held by the spring hooks 5. Hence,owing to the elasticity of the cross pieces, they press the cover firmlyagainst the photo-paper- During the printing, whenever a control of theproceeding of the impression be desired, it will be sullicient to pushdown thebuttons 8 of the portion of These buttons act on the levers 6which push outwardly on the spring hooks, thus setting free thecorresponding cross piece 4f which by elasticity springs out of thehooks. Then by disengaging the stop 9 from theslot 9a by means of thefinger pieces 10. the portion 2 of the. cover can be raised, thusallowing the intermediate controls of the printing of the paper.

l/Vhen the desired pointof impression of the paper has been reached, bypushing` all of the four buttons 8, both the cross pieces will bedisengaged from the hooks, and after setting free the plate cover byacting on the stop 9, the impressed paper can be taken out.

While I have herein shown and described a preferred form ofvmyinvention, I would have it understood that changes may be made in theform, proportion and construction of the several parts Without departingfrom the Spirit of my 'invention and within the scope of the appendedclaim.

Having' now described and ascertained the nature of my said inventionand in what manner the some is to be performed, I dechire that what IClaim is:

A photo-printing press, comprising a i'zune, i giziss pane therein, u@over for a1'- rangeinent in the frame und on the said pane undComprising' a pair of hingediy Connected members, one of said membersbeing; pro-- vided with cross sectiionmi V-simped ehu il: stop,)injecting from the 'free Side diei-ooi', Said frame being provided inone side Wii'ii a sio to receive Suid Stop und so :wronged that thesides of said sio; 11m/jy be frictionziiljvv engaged by said stop, anddetachable means to press said cover against smid pane.

In testimony whereof I aiiix my signature.

GUSEPPE MARCON I.

